<?xml version="1.0" encoding="utf-8"?>
<!--
Taxonomy Presentation Links linkbase based on XBRL standard Version 2.1.
Created by UBmatrix Taxonomy Designer 1.0.0.0 (2008-10-25 16:26).  
Contact www.ubmatrix.com
Copyright (c) 2002-2008 UBmatrix inc., All Rights Reserved
Produced on 2008-12-12 09:52:02
-->
<linkbase
  xmlns="http://www.xbrl.org/2003/linkbase"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xsi:schemaLocation="
    http://www.xbrl.org/2003/linkbase 
      http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd
    ">
  <roleRef xlink:type="simple"
    xlink:href="nav-rel-test1.xsd#link1"
    roleURI="http://abc.com/role/link1" />
  <roleRef xlink:type="simple"
    xlink:href="nav-rel-test1.xsd#link2"
    roleURI="http://abc.com/role/link2" />
  <presentationLink xlink:type="extended"
    xlink:role="http://abc.com/role/link1">
    <loc xlink:type="locator"
      xlink:label="test_A"
      xlink:href="nav-rel-test1.xsd#test_A" />
    <loc xlink:type="locator"
      xlink:label="test_A1"
      xlink:href="nav-rel-test1.xsd#test_A1" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A" xlink:to="test_A1"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A11"
      xlink:href="nav-rel-test1.xsd#test_A11" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A1" xlink:to="test_A11"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A111"
      xlink:href="nav-rel-test1.xsd#test_A111" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A11" xlink:to="test_A111"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A112"
      xlink:href="nav-rel-test1.xsd#test_A112" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A11" xlink:to="test_A112"
      order="2"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A113"
      xlink:href="nav-rel-test1.xsd#test_A113" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A11" xlink:to="test_A113"
      order="3"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A12"
      xlink:href="nav-rel-test1.xsd#test_A12" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A1" xlink:to="test_A12"
      order="2"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A121"
      xlink:href="nav-rel-test1.xsd#test_A121" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A12" xlink:to="test_A121"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A122"
      xlink:href="nav-rel-test1.xsd#test_A122" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A12" xlink:to="test_A122"
      order="2"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A13"
      xlink:href="nav-rel-test1.xsd#test_A13" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A1" xlink:to="test_A13"
      order="3"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A2"
      xlink:href="nav-rel-test1.xsd#test_A2" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A" xlink:to="test_A2"
      order="2"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A21"
      xlink:href="nav-rel-test1.xsd#test_A21" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A2" xlink:to="test_A21"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A211"
      xlink:href="nav-rel-test1.xsd#test_A211" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A21" xlink:to="test_A211"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A3"
      xlink:href="nav-rel-test1.xsd#test_A3" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_A" xlink:to="test_A3"
      order="3"
      use="optional" />
  </presentationLink>
  <presentationLink xlink:type="extended"
    xlink:role="http://abc.com/role/link2">
    <loc xlink:type="locator"
      xlink:label="test_B"
      xlink:href="nav-rel-test1.xsd#test_B" />
    <loc xlink:type="locator"
      xlink:label="test_B1"
      xlink:href="nav-rel-test1.xsd#test_B1" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_B" xlink:to="test_B1"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A2"
      xlink:href="nav-rel-test1.xsd#test_A2" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_B" xlink:to="test_A2"
      order="2"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_C"
      xlink:href="nav-rel-test1.xsd#test_C" />
    <loc xlink:type="locator"
      xlink:label="test_C1"
      xlink:href="nav-rel-test1.xsd#test_C1" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_C" xlink:to="test_C1"
      order="1"
      use="optional" />
    <loc xlink:type="locator"
      xlink:label="test_A3"
      xlink:href="nav-rel-test1.xsd#test_A3" />
    <presentationArc xlink:type="arc"
      xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child"
      xlink:from="test_C1" xlink:to="test_A3"
      order="1"
      use="optional" />
  </presentationLink>
</linkbase>